Organic Portuguese Kale Seeds

Portuguese kale is a heavy producer of large, tender leaves that are wonderful fresh or cooked. If you are not already a lover of kale, this highly nutritious variety will win you over with its mild and slightly sweet flavor.

Planting by Zones

Zones 9-10

• Kale is a cool-season plant that does best in cool temperatures. It is happiest in winter and early spring during the seasonal rains but can be grown year-round in mild areas. Kale can be easily direct-seeded or transplanted out.

Zones 2-8

• Plant from early spring until about three months before the first fall frost. Crop protection like row covers can extend the growing season.

Planting Kale

• Kale is easy to plant directly in the soil or into starter pots and transplanted out.
• To direct sow, plant seeds in well-worked soil that has been deeply watered and is debris-free. Cover with 1/4” of finely sifted soil.
• If you are planting seeds in starter pots, plant into thoroughly moist high-quality seed starting soil. Place seeds on the top of the soil and cover with 1/4” of finely sifted soil.
• Once your kale has germinated, and the first set of true leaves show, fertilize with an organic liquid fertilizer. When the plants are 3-4” tall, you can plant them out into the garden.

Growing Kale 

• Grow in full sun during the cooler part of the year. In warmer months, kale can take some shade. If the weather is particularly hot, you can use shade cloth to protect the crop.
• Kale is easy to grow and does not suffer from many pests or disease issues. Plant with adequate spacing to ensure good airflow around the plants. This will help with aphids and whiteflies.

Harvesting Kale 

• Harvest at any point that the leaves are worth eating. In Zones 9 and 10, they can grow very tall because of our long growing season. Try your kale in this Portuguese Kale Soup recipe. 

Growing Kale in Containers

• Kale is a great container crop. Make sure your container is at least 20” deep. Keep in mind containers will dry out faster because they have more surface area and less soil to hold onto moisture. Mulch heavily on the top layer of soil in the pot to keep the soil from drying out or heating up too much.

Southern California Pro-tips

• In areas of Zones 9 and 10, kale can grow year-round but will be less productive and tasty during the hot months.
• Mulch heavily around your plants to ensure the soil does not dry out or heat up too much.
• Spray plants with a hard jet of water to remove any aphids you find. Check the underside of leaves!

Companion Flowers/Crops

• Since kale is a long-term crop, plant in an area of your garden where you can enjoy tons of flowers around it, we love planting with nasturtium, alyssum, borage, and cosmos.
• Grow Portuguese Kale alongside other heat-tolerant dark leafy greens like out Champion Collards, Mustard Greens, and Ethiopian Kale.

Additional Learning Resources

• New to starting crops from seeds? Please watch our Seed Starting Presentation to learn the basics!
• Learn about growing all our crops on our YouTube page!
• Having pest issues? Check out in-depth information for pests that can be an issue for kale at the UC Integrated Pest Management site.